A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

A custom structure in C++ (and various other languages) which can contain member data and functions. An instance of a class is called an object.
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98 questions
For questions about communication or data transfer between Arduino and Android devices. General Android questions can be asked on Android.SE.
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Passive electronic component which reduces current flow in a circuit, dissipating power as heat.
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For question related to environment with networks.
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In-system programming (ISP) refers to the ability of chips to be programmed while installed in the system.
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used to convert a serial string of bits into parallel data, or vice-versa.
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A semiconductor component used for amplifying or switching electrical signals. Use this tag for discussing transistor circuits.
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Typically refers to a specific type of device which allows raw serial communication with a PC via USB.
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low-power Atmel 8-bit AVR RISC-based microcontroller
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90 questions
A new paradigm where many, typically microcontroller-driven embedded systems are connected by the Internet, and they are cooperating with eachother to reach common goals, without requiring human-to-hu…
The WS2812 Integrated Light Source from Adafruit.
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An electro-mechanical device for detecting angular position and/or motion.
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An Atmel 8-bit AVR microcontroller.
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a vibration that propagates as a typically audible mechanical wave of pressure and displacement, through a transmission medium such as air or water.
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for the Wire library, used for I2C/TWI communication.
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used to generate a PWM (Pulse Width Modulation) output signal on compatible pins.
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also known as ANSI/TIA/EIA-485, TIA/EIA-485, EIA-485 or RS-485, is a standard defining the electrical characteristics of drivers and receivers for use in balanced digital multipoint systems. The stand…
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A variable in C/C++ which stores the type and location of data in memory.
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A gps library providing: position, date, time, altitude, speed and course
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if your question is related to signal processing techniques (within the Arduino's capability).
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The process of finding and resolving problems ('bugs') in a hardware and/or software system.
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Interrupt Service Routine. A function which gets called in response to an interrupt signal.
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A thin-film transistor (TFT) screen
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Musical Instrument Digital Interface.
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A stepper motor or step motor or stepping motor is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold …
A datatype in C/C++ which stores a single-precision floating point number.
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Refers to a crystal oscillator.
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68 questions
Port-mapping refers to directly accessing the hardware registers (ports), in particular the input/output ports. Use this tag for discussing direct port access.
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Refers to Mac operating systems.
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for questions relating to computer software used for interaction with the Arduino. For example, you could use this tag for questions about programming environments, or you could use it f…
65 questions
a simple protocol for serial communication between electronic devices.
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